SSS requests evidence that every organisation working as part of the supply chain has been assessed to a recognised health and safety industry standard by a nominated third party. SSS also requires that every employee be accredited with the specific qualifications for their particular trade.
In addition to this evidence of competence, SSS requests documents to substantiate risk assessments and safe systems of work for each specific task, including the availability of the necessary personal protective equipment (PPE), training and communications to ensure that PPE is used and procedures are adhered to.